GB/T 21216-2007 (English Version) PDF

Standard No.: GB/T 21216-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 21216-2007

Scope: This standard introduces a method for measuring the dielectric loss factor tanδ of insulating liquids. This method obtains tanδ after synchronous measurement of conductance G and capacitance C. This standard is applicable to unused insulating liquids and operating transformers or other Insulating liquid used in electrical equipment. Although this standard applies to all liquids mentioned in GB/T 5654-2007, even liquids with high insulating properties, this standard cannot replace GB/T 5654-2007. This method can accurately measure the dielectric loss factor as small as 10 under power frequency, and its measurement range is between 10 and 1, and it can reach 200 under special conditions

GB/T 21216-2007 Referenced Document

GB/T 5654-2007 Insulating liquids.Measurement of relative permittivity,dielectric dissipation factor and d.c.resistivity
GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 5725-3:1994 Accuracy (trueness and precision) of measurement methods and results - Part 3: Intermediate measures of the precision of a standard measurement method
ISO 5725-4:1994 Accuracy (trueness and precision) of measurement methods and results - Part 4: Basic methods for the determination of the trueness of a standard measurement method

2007 GB/T 21216-2007 Insulating liquids.Determination of the dielectric dissipation factor by measurement of the conductance and capacitance.Test method